Digital Pot

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  1. - 29th July 2008, 15:27 #1
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    Quote Originally Posted by skimask View Post
    Another way, use the PWM module (or software PWM) across an R/C network, vary the duty cycle of the PWM output to change the average voltage across the cap. Probably want to follow the R/C with an Op-Amp so any loads won't change the voltage across the cap much.
    Can you post samo exaple, i dont understand good?
  2. - 29th July 2008, 16:20 #2
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    Quote Originally Posted by Tastature View Post
    Can you post samo exaple, i dont understand good?
    PWM - pulse width modulation (wikipedia)
    http://en.wikipedia.org/wiki/Pulse-width_modulation
    1st hit in Google...

    PWM in a PIC...(search phrase 'pwm microchip.com')
    ww1.microchip.com/downloads/en/AppNotes/00538c.pdf

    1st hit in Google...

    1st hit both times...
    Last edited by skimask; - 29th July 2008 at 16:22.
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